Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator

Gregor H. Welsh, Maria Pia Anania, Constantin Aniculaesei, Enrico Brunetti, Ronan Timothy Liam Burgess, Silvia Cipiccia, David Clark, Bernhard Ersfeld, Mohammad Islam, Riju Issac, Grace Manahan, Thomas McCanny, Gaurav Raj, Albert Reitsma, Richard Shanks, Gregory Vieux, Mark Wiggins, Dino Jaroszynski, W. A. Gillespie, A. M. MacLeod & 2 others S.B. van der Geer, M. J. de Loos

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefield
accelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laser
is focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80 - 200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magnetic
dipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 r 4 MeV and mean energy
spread is 1.1 r 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52ȝm diameter holes in tungsten. The analysis of
the pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1ʌ mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, the
relative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.
LanguageEnglish
Title of host publicationIPAC 2010 contributions to the proceedings
Pages1146-1148
Number of pages3
Publication statusPublished - 18 Jun 2010
Event1st International Particle Accelerator Conference, IPAC’10 - Kyoto, Japan
Duration: 23 May 201028 May 2010

Conference

Conference1st International Particle Accelerator Conference, IPAC’10
CountryJapan
CityKyoto
Period23/05/1028/05/10

Fingerprint

plasma accelerators
laser plasmas
accelerators
electron beams
x rays
emittance
peppers
energy
electrons
gas jets
low currents
high gain
radiation sources
free electron lasers
tungsten
sapphire
energy spectra
helium
spectrometers
electron energy

Keywords

  • electron beam
  • quality masurements
  • ALPHA-X
  • laser-plasma
  • wakefield accelerator

Cite this

Welsh, G. H., Anania, M. P., Aniculaesei, C., Brunetti, E., Burgess, R. T. L., Cipiccia, S., ... de Loos, M. J. (2010). Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator. In IPAC 2010 contributions to the proceedings (pp. 1146-1148)
Welsh, Gregor H. ; Anania, Maria Pia ; Aniculaesei, Constantin ; Brunetti, Enrico ; Burgess, Ronan Timothy Liam ; Cipiccia, Silvia ; Clark, David ; Ersfeld, Bernhard ; Islam, Mohammad ; Issac, Riju ; Manahan, Grace ; McCanny, Thomas ; Raj, Gaurav ; Reitsma, Albert ; Shanks, Richard ; Vieux, Gregory ; Wiggins, Mark ; Jaroszynski, Dino ; Gillespie, W. A. ; MacLeod, A. M. ; van der Geer, S.B. ; de Loos, M. J. / Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator. IPAC 2010 contributions to the proceedings . 2010. pp. 1146-1148
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abstract = "The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefieldaccelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laseris focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80 - 200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magneticdipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8{\%} are measured. The mean central energy is 82 r 4 MeV and mean energyspread is 1.1 r 0.4{\%}. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52ȝm diameter holes in tungsten. The analysis ofthe pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1ʌ mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, therelative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.",
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Welsh, GH, Anania, MP, Aniculaesei, C, Brunetti, E, Burgess, RTL, Cipiccia, S, Clark, D, Ersfeld, B, Islam, M, Issac, R, Manahan, G, McCanny, T, Raj, G, Reitsma, A, Shanks, R, Vieux, G, Wiggins, M, Jaroszynski, D, Gillespie, WA, MacLeod, AM, van der Geer, SB & de Loos, MJ 2010, Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator. in IPAC 2010 contributions to the proceedings . pp. 1146-1148, 1st International Particle Accelerator Conference, IPAC’10, Kyoto, Japan, 23/05/10.

Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator. / Welsh, Gregor H.; Anania, Maria Pia; Aniculaesei, Constantin; Brunetti, Enrico; Burgess, Ronan Timothy Liam; Cipiccia, Silvia; Clark, David; Ersfeld, Bernhard; Islam, Mohammad; Issac, Riju; Manahan, Grace; McCanny, Thomas; Raj, Gaurav; Reitsma, Albert; Shanks, Richard; Vieux, Gregory; Wiggins, Mark; Jaroszynski, Dino; Gillespie, W. A.; MacLeod, A. M.; van der Geer, S.B.; de Loos, M. J.

IPAC 2010 contributions to the proceedings . 2010. p. 1146-1148.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator

AU - Welsh, Gregor H.

AU - Anania, Maria Pia

AU - Aniculaesei, Constantin

AU - Brunetti, Enrico

AU - Burgess, Ronan Timothy Liam

AU - Cipiccia, Silvia

AU - Clark, David

AU - Ersfeld, Bernhard

AU - Islam, Mohammad

AU - Issac, Riju

AU - Manahan, Grace

AU - McCanny, Thomas

AU - Raj, Gaurav

AU - Reitsma, Albert

AU - Shanks, Richard

AU - Vieux, Gregory

AU - Wiggins, Mark

AU - Jaroszynski, Dino

AU - Gillespie, W. A.

AU - MacLeod, A. M.

AU - van der Geer, S.B.

AU - de Loos, M. J.

PY - 2010/6/18

Y1 - 2010/6/18

N2 - The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefieldaccelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laseris focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80 - 200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magneticdipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 r 4 MeV and mean energyspread is 1.1 r 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52ȝm diameter holes in tungsten. The analysis ofthe pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1ʌ mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, therelative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.

AB - The Advanced Laser-Plasma High-Energy Accelerators towards X-rays (ALPHA-X) programme at the University of Strathclyde is developing laser-plasma wakefieldaccelerators to produce high energy, ultra-short duration electron bunches as drivers of radiation sources. Coherent emission will be produced in a free-electron laser by focussing the ultra-short electron bunches into an undulator. To achieve net gain, high peak current, low energy spread and low emittance are required. A high intensity, ultra-short pulse from a 30 TW Ti:sapphire laseris focussed into a helium gas jet to produce femtosecond duration electron bunches in the range of 80 - 200 MeV. Beam transport is monitored using a series of Lanex screens positioned along the beam line. Measurements of the electron energy spectrum, obtained using the ALPHA-X high resolution magneticdipole spectrometer, are presented. The maximum central energy of the monoenergetic beam is 90 MeV and r.m.s. relative energy spreads as low as 0.8% are measured. The mean central energy is 82 r 4 MeV and mean energyspread is 1.1 r 0.4%. We also present pepper-pot measurements of the normalised transverse emittance where mono-energetic electrons are passed through an array of 52ȝm diameter holes in tungsten. The analysis ofthe pepper-pot results sets an upper limit for the normalised emittance at 5.5 ± 1ʌ mm mrad for an 82 MeV beam. With further acceleration to 1 GeV, therelative energy spread will reduce giving beam parameters that indicate the feasibility of a compact X-ray FEL driven by a plasma-wakefield accelerator.

KW - electron beam

KW - quality masurements

KW - ALPHA-X

KW - laser-plasma

KW - wakefield accelerator

UR - http://accelconf.web.cern.ch/AccelConf/IPAC10/

UR - http://ipac10.org/index__Main.HomePageOrig

M3 - Conference contribution book

SN - 9789290833529

SP - 1146

EP - 1148

BT - IPAC 2010 contributions to the proceedings

ER -

Welsh GH, Anania MP, Aniculaesei C, Brunetti E, Burgess RTL, Cipiccia S et al. Electron beam quality masurements on the ALPHA-X Laser-plasma wakefield accelerator. In IPAC 2010 contributions to the proceedings . 2010. p. 1146-1148